A screaming match between Central Catholic grad Kate Major and her on-again-off-again boyfriend Michael Lohan left Sunday's episode of "Celebrity Rehab" with a cliffhanger that suggested Lohan - Lindsay's dad - was arrested.

In clip from the show at Jezebel Michael, who is at Pasadena Recovery Center for treatment wih Dr. Drew Pinsky, has a shouting match with Kate over the phone that escalates when she pulls up outside the center.

Michael calls Kate a "hooker" among other nasty things and Kate responds angrily "I'm not even attracted to you! you're old, you're ugly, and you're bald."

"Get out of my face you sick liar," she screams. "The only thing holding you back from beating me up is the cameras."

The whole shouting match apparently started over a tabloid photo of Michael kissing Kim Granatell of the "Real Housewives of New Jersey."

Michael told staff at the facility that Kate saw the pictures and started "flipping out." Michael and Kate started arguing over the phone as the cameras rolled. Michael tried to say the kiss was just an act for the TV show but it seemed Kate wasn't buying it. Michael yelled to Kate that she should get "your ass here" while she said she didn't want to talk on camera.

As the two yelled, staff kept reminidng Michael of his heart condition. Kate asked that police be called and it seemed as if they might arrest Michael at the end of the show.

However Michael later tweeted "as you will see, I was not cuffed arrested. The creative editing didn't explain what really happened, but future episodes will."